For laboratory and research use only. Not for human or animal consumption. Sold to qualified researchers and licensed laboratories.
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PT-141 10 mg research peptide vial with lot PT141-0803 label
Longevity & Skin · SKU P1-10

PT-141 10 mg

Melanocortin receptor agonist (bremelanotide) studied in neuroendocrine work.

$60 per 10 mg vial · free shipping over $1,000

In stock · ships same day on orders before 2pm ET

10 mg · lot PT141-080399.85% purity by RP-HPLC (214 nm) · content 10.24 mg · certificate
IdentityPT-141 confirmed by LC-MS/MS
Endotoxin<0.05 EU/mL
Heavy metals<0.01 ppm
LaboratoryBioviridian Inc. · code COA7625 · check it on the lab's site
FormLyophilized powder, sealed vial
Storage-20°C sealed · 2-8°C reconstituted
CAS number189691-06-3
Molecular formulaC50H68N14O10
Molecular weight1025.2 g/mol
Residues7
Buying in quantity?

Wholesale pricing starts at 25 vials per SKU, with net-30 terms for verified institutions. It is quoted per order rather than applied in the cart — ask for a wholesale quote.

Every lot of PT-141 in the COA library · Latest lot report

Ships same day on orders before 2pm ET. For laboratory research use only. Not for human or animal consumption.

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What is PT-141?

PT-141, also called bremelanotide, is a cyclic heptapeptide analogue of alpha-MSH and a metabolite of melanotan-2. It acts at melanocortin receptors, principally MC3R and MC4R, and is studied for central rather than peripheral melanocortin signalling. Pepstral supplies it as a lyophilized powder for in-vitro laboratory research only.

→Read the full PT-141 research guide

What is PT-141 studied for?

  • MC3R and MC4R binding assays
  • Central melanocortin signalling research
  • Neuroendocrine pathway studies
  • Comparisons against melanotan-2

All applications above are in-vitro or preclinical research contexts. PT-141 is sold for laboratory research only and is not for human or animal use.

What does the certificate for lot PT141-0803 show?

Every lot of PT-141 is tested by an independent US laboratory before it is listed. The report for lot PT141-0803 is in the COA library and the lot number printed on the vial matches it. The current results:

TestMethodLot PT141-0803 result
IdentityLC-MS/MSPT-141 · conforms
ContentHPLC quantitation10.24 mg
PurityRP-HPLC (214 nm)99.85%
EndotoxinUSP <85><0.05 EU/mL
Heavy metalsUSP <232><0.01 ppm

How is PT-141 handled and stored?

Sealed vials are stored at -20°C away from light and keep for 24 months. To reconstitute, add bacteriostatic water slowly down the inside wall of the vial and swirl until clear; never shake. Once in solution, keep at 2 to 8°C and use within our 28-day default for a preserved solution. The concentration table gives the dilution volumes and microlitre aliquots for this vial.

Frequently asked questions

How does PT-141 relate to melanotan-2?

It is a metabolite of it, with the C-terminal amide replaced, which shifts activity away from MC1R and pigmentation.

Which receptors does it prefer?

It is described as acting principally at MC3R and MC4R rather than the MC1R pigmentary pathway.

Is PT-141 for human use?

No. Every product on this site is sold for in-vitro laboratory research only and is not for human or animal consumption, diagnostic or therapeutic use.

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Lot certificatesPublished in full, and the product page says when a lot has none
≥99% purityHPLC and LC-MS verified
Same-day shippingOrders before 2pm ET
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Ships from the USADispatched domestically with tracking
Discreet packagingPlain box, no product names

Restock alerts and new lot reports, by email

One email when a new certificate is published, when a sold-out compound is back, or when a new compound is added. About twice a month, nothing else.